iPhone 应用程序中的 uigesturerecognizer

发布于 2024-12-12 18:48:34 字数 503 浏览 0 评论 0原文

您好，我想模拟长按按钮吗？我该怎么做？我认为需要一个计时器。你能帮助我吗？我看到 UILongPressGestureRecognizer 但如何利用这种类型？

这是代码，它不识别长按

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.button addGestureRecognizer:longPress];
[longPress release];

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
    if ( gesture.state == UIGestureRecognizerStateEnded ) {
         NSLog(@"Long Press");
    }
}

原文

Hello I want to emulate a long a press button? how can I do this? I think a timer is needed. Can you help me? I see UILongPressGestureRecognizer but how can I utilize this type?

here is the code , it isn't recognize long press

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.button addGestureRecognizer:longPress];
[longPress release];

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
    if ( gesture.state == UIGestureRecognizerStateEnded ) {
         NSLog(@"Long Press");
    }
}

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软糖 2024-12-19 18:48:34

为了使用UILongPressGestureRecognizer，您必须设置minimumPressDuration属性。这指定了手势识别器被触发之前等待的时间。例如

UILongPressGestureRecognizer *longPress = [[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)] autorelease];
longPress.minimumPressDuration = 2.0f;
[self.button addGestureRecognizer:longPress];

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
    if ( gesture.state == UIGestureRecognizerStateEnded ) {
         NSLog(@"Long Press");
    }
}

In order to utilize UILongPressGestureRecognizer you must set the minimumPressDuration property. This specifies how long to wait until your gesture recognizer is fired. For example

UILongPressGestureRecognizer *longPress = [[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)] autorelease];
longPress.minimumPressDuration = 2.0f;
[self.button addGestureRecognizer:longPress];

- (void)longPress:(UILongPressGestureRecognizer*)gesture {
    if ( gesture.state == UIGestureRecognizerStateEnded ) {
         NSLog(@"Long Press");
    }
}

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